Name 5 facts that prove the earth is round

1. The moons shadow can cue Earth's spherical shape, hence the lunar eclipse. 
2. The way we see boats 'rise' from the ocean when looking from a shore. If the Earth was flat, we would see it as just appearing, 
3. The field of view considering star constellations would differ on a flat planet.
4. Shadows wouldn't move, but appear in the same location on a flat planet. 
5. Seeing farther from higher can explain a phenomenon of curvature. 

The answer is    d.  central highlands

The correct answer is:   [b]:   "distortion" .